Nothing special, stock engine D16Y5, 196k on engine.
16" wheels (5 spoke) in front, 17" (7 spoke) in back.
Still have front mud guards, CAI (more like HAI though). Trans oil has 30k+, engine oil 6k+
Constantly doing 1,2,5 shifting
Lot of passing on 2-lane roads.
High speed cornering and stoplight timing seem to let me break even on MPG.
None, unless you count the license plate partially blocking the grill and possibly lower than stock suspension.